\ 



276 



ILLUSTRATIONS OF THE 



of thefe ftones might not be fixed, and 



d 



e 



ilrudible by heat, thoug 



be eafily 



d or 

 ved. 



Thi 



filmed when fuch compreffion is 

 . argument then is againft the 



volcanic ; but not againft what has been called 

 the Fhitonic formation of bafaltes. 



246. As to the other marks of fire which Do- 

 lomieu fought for and did not find in the above- 

 mentioned ftones, we are not exadly informed 

 in what they confifted. If the cryftallized or 

 fpathofe texture that belongs to this defcription 

 of fl;ones was wanting, the fpecimens were not 

 to be confidered as of the real bafaltic or whin- 

 ftone genus, whatever their name or hiilory may 

 feem to indicate. If they did poflefs that tex- 

 ture, they had the only mark of an igneous ori- 

 gin that could be expeded, fuppofing that ori- 

 gin to have been -in the bowels of the earth. 

 No part, therefore, of the obfervations of this 



\ 



ingenious mineralogift, can be confidered as in- 

 confiftent with the theory of bafaltic rocks 

 which has been laid down above. 



247. Bergman had before reafoned on this 

 fubjedl precifely in the fame manner, but from 



b 



as 



the ftones fr 



' -m 



d h 



g 



th 



Trap," f'cty 

 hinftone), * 



that 



g 



hich he d 



native 



author, (th 



" is found in the ftratified moun- 

 of Weft Gothland, in a w^ay that deferves 



to. 



